128327841 has 16 divisors (see below), whose sum is σ = 190484800. Its totient is φ = 85385664.

The previous prime is 128327831. The next prime is 128327851. The reversal of 128327841 is 148723821.

It is an interprime number because it is at equal distance from previous prime (128327831) and next prime (128327851).

It is not a de Polignac number, because 128327841 - 2¹⁸ = 128065697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128327796 and 128327805.

It is not an unprimeable number, because it can be changed into a prime (128327821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10425 + ... + 19113.

It is an arithmetic number, because the mean of its divisors is an integer number (11905300).

Almost surely, 2^128327841 is an apocalyptic number.

It is an amenable number.

128327841 is a deficient number, since it is larger than the sum of its proper divisors (62156959).

128327841 is an equidigital number, since it uses as much as digits as its factorization.

128327841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245 (or 9239 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 128327841 is about 11328.1878956875. The cubic root of 128327841 is about 504.3983174914.

The spelling of 128327841 in words is "one hundred twenty-eight million, three hundred twenty-seven thousand, eight hundred forty-one".